A Line in the Sand

Drawing in sand – it’s “just” a ball bearing moving around a circular, sand-covered tabletop using a concealed magnet – how hard can it be?

MK14 meets 7Bot

Programming this old computer by hand proved tedious so I decided to try a robot arm instead.

Board Anyone?

Making PCBs used to be hard. But now I’ve found EasyEDA and it’s great. Here are links to some boards I’ve made. So what’s stopping you. Get making!

A Little Logger

A quick route to a wireless data logger for testing ways to detect light levels outside

Non-Vesting Share Options

Stock options are a great way to reward employees and non-vesting options are the best kind for everyone – the company and the employees.

Single-Arm Robot

A single-arm SCARA robot which I intend to use to automate game playing on a smartphone – one day!

Auto Reminder Watch

Auto Alarm Watch to remind kids about music lessons and the like. When in range of a suitable Raspberry Pi running the calendar connection software the watch gets new time alarm settings automatically via Bluetooth Low Energy (BLE). It then vibrates discretely when the time comes to leave for a music lesson. It is also a binary display watch.

Central Heating Monitor

A “box” to monitor various aspects of a central heating system – and software, etc.

Spidey Wall for Real

Rupert’s guest post has given me the kick required to “finish” the Spidey Wall – here’s a video to show what it does.